2. Choose either the 32-bit (x86) or the 64-bit (x64) version of SP1 depending on whether you’re running the 32-bit or the 64-bit version of Windows 7, and then click Download.(To find out which version you’re running, click the Start button , right-click Computer, and then click Properties. Under System, next to System type, you can view the operating system.)

3. To install SP1 immediately, click Open or Run, and then follow the instructions on your screen. To install SP1 later, click Save and download the installation file to your computer. When you’re ready to install SP1, double-click the file.